Apparatus for drying and sterilizing air.



R. P. VAN CALCAR, J. ELLERMAN & H. J. MARTUN.

APPARATUS FOR DRYING AND STERILIZING AIR.

APPLICATION FILED MN.

Patented Feb. 1, 1916.

2 SHEETSSHEET I.

R. P. VAN CALCAH, J. ELLERMAN & H. J. MARTIJN.

APPARATUS FOR DRYING AND STERILIZING AIR.

APPLICATION FILED JAN. 6, 1914- LTYQAEEQ Patented Feb. 1, 1916.

2 SHEETSSHEET 2,

.s iron.

REINDER PIETERS VAN CALCAR, or OEGSTGEEST, AND JAN ELLERMAN AND HENDRIKUS JOHANNES MARTIJN, on THE HAGUE, NETHERLANDS.

APPARATUS FOR DRYING AN'D STERILIZING AIR.

To all whom it may concern:

Be it known that we, REINDER Prnrnns VAN 'CALoAR, professor, JAN ELLERMAN, banker,

and HENDRIKUS J OHANNES MARTIJN,banke1', residing the former in the city of Oyegst- *geest, in the Kingdom of the Netherlands,

and the two latter in the city of The Hague, in the Kingdom of the Netherlands, have invented certain new and useful Improvements in Processes for and Apparatus for Drying and Sterilizing Air, of which the following is a specification.

The object of this application consists in further improvements in the subject matter of our U. S. A. Patent No. 1,067 ,693 relating to means, for drying and sterilizing of air, by means of chemical absorbing agent.

It has been found in practice, that the absorbing capacity of the chemical absorbing agent by the means used hitherto,

and described in our foregoing patent has not been adequately util zed; and the present improvement has for its object to provide I fora special method of increasing the absorption effect on the chemical absorption agent employed, and of an apparatus for attaining this increased absorption effect.

The same unit quantity of calcium chlorid can be used for absorbing a largequantity of atmospheric moisture if it isemployed in a suitable manner. If, when the apparatus described in the before mentioned patent,

is employed, a kilogram of calcium chlorid absorbs one liter of atmospheric moisture or more, in accordance with the present improvement one kilogram of calcium chlorid will absorb approximately two and a half liters of atmospheric moisture. This efiect is obtained owing to the fact that before the air ascends and reaches the calcium chlorid,

and before it passes through or over the same, it has been preliminarily dried. This preliminary drying is obtained in the following manner: The moisture of the ascending atmospheric air dissolves the calcium chlorid arranged in the upper part of the apparatus. The liquid thus caused to drop is collected in the lower part of the apparatus, and absorbed by porous bodies or substances. These porous bodies or substances are arranged in such a manner that before the atmospheric air admitted ascends .to the troughs filled with calcium chlorid,

'it must necessarily pass over the said bodies. These bodies having absorbed the calcium Specification of Letters Patent.

Application filed January 6, 1914. Serial No. 810,637.

PatentedlFeb. 11, rare.

chlorid solution which is still cap-able of absorblng atmospheric moisture the quantity of calcium chlorid absorbed by the porous bodies or substances is utilized for prelimi-' narlly drying the air continuously conducted into the apparatus, so that only preliminarily dr1ed air which has been freed from the greater part of its moisture, passes to the upper trough filled with calcium chlorid. Bythisv means, the result attained, is that the quantity of calcium chlorid contained in the upper part of the apparatus has no longer to eliminate the whole of the atmospheric moisture, but is only employed for effecting the subsequent drying, and by this means, the method is rendered far more economical.

In order to attain the result described a trough with asolidbottom is arranged in the lower part of the apparatus and from th s bottom, pins or protuberances of a certaln length project in the upward direction. These projecting bodies such as pins or the like, are incased in porous substances such as cotton wool, sponge, felt or the like, and act as battles for the air which is caused to circulate around and over them. The perforated troughs. arranged in the upper part of the apparatus, and filled with calcium" chlorid can be provided with pins or other battles extending downward from their bottom faces and down which the calcium chlorid employed for the. final drying is able to trickle, whereby the preliminary drying of the air already preliminarily dried on the lower trough, is still further increased.

The apparatus is illustrated in Figure 1 which shows the apparatus in vertical section, Fig; 2 showing the lowesttrough in section with the incased pins, and Fig. 3 is a View partly in section showing one of the pins and its enveloping cover on an enlarged scale. Fig. 4 is a perspective view showing the underside of a pan having de pending staggered pins. Fig. 5 is a view similar to Fig. 4 with the pins arranged in fore referred In the form shown in upper pans or troughs.

a number of pins looped together,

f consists of aispirally wound suitable for the lower pan and formed of a spiral coil of wire. Fig. 10 is a modification similar to Fig. 9 but suitable for the Fig. 11 is an illustration showing a compound pin formed of the pins being of the type shown inFig. 7. Fig. 12 is a view showing a group of pins, the individual pins being similar to Fig. 10.

The general form of the invention is similar to that disclosed in the patent hereinbeshown there is provided a casing 8 near the bottom of hich are air admission apertures 6. Suitably supported near these air admission apertures is a trough or pan 1O having a solid bottom. Above this trough or pan is a beveled plate 11 and between this beveled plate and the top of the apparatus are a series of pans or troughs 2, each provided on its bottom with a central opening 2' and being charged with calcium chlorid as indicated at 3. Projecting upward from the pan 10 and downward from the bottoms of the pans 2 are circuit pins which are indicated in general at 7. In the form shown in Fig. 3 each of these pins is providedwith a cylindrical core 12'surrounded by anabsorbent envelop 13 preferably having an ogival head 14. In the form shown in Fig. 7 the-body of the pin is ogival as indicated at 15 and is surrounded with a layer of absorbent material 16 of a uniform thickness so that this layer is also provided with an ogival point. In the form shown in Fig. 8-there is provided a hollow ogivalbody 17 surrounded by an ogival envelop 18. In the form shown in Figs. 9 and 10 the 'pin merely length of wire 19, Fig. 9 showing the apex of the spiral directed upwardly and Fig; 10 showing the spiral with its apex directed downwardly.

' Fig. 11 the same type of pin is employed as that shown in Fig. 7,

either on but these pins are grouped together inthrees shown in said figure. In the form shown in as illustrated in Fig. 10, are connect'ed'as at 20. Any

the trough 10 or the troughs2,'and these arran ements may take the staggered formation own in Fig. 4, the parallel recto, and in the construction.

Fig. 12 the different spirals, such one of these forms may be arranged tangular formation shown in Fig. 5, or the parallel circular formation shown in Fig. 6.

It is to be understood that all of the pans 2 are provided with perforations 2 in their bottoms, as clearly shown in Fig. 1.

What we claim is: y

1. An apparatus for drying and'sterilizing air consisting of a casing having inlet means at the bottom and outlet means at the top, pans held in said casing andprovided with foraminated bottoms, said pans being adapted to contain a drying and sterilizing chemical, and pins projecting from the bottoms of said pans and arranged to aiford contact surfaces for the air flowing through the apparatus.

2. An apparatus for drying and sterilizing air consisting of. a' casing having inlet means at the bottom and outlet means at the top, pans held in said casing and provided with foraminated bottoms, said pans being adapted to contain a drying and sterilizing chemical, and pins pro ecting from the bottoms of said pans and arranged to afford contact surfaces for the air flowing through the apparatus, said pins being pro;

vided each with an absorbent envel0p.

.3. An apparatus for drying and sterilizing air comprising a casing having inlet and outlet openings, pans bottoms held in said casing in superposed staggeredrelation, and baflie pins projecting downward from the bottoms of said pans.-

4. An apparatus ing air comprising a casing having inlet and outlet openings, pans having bottoms held in said casing in superposed staggered relation, and baflie pins proj ecting.

nmmmr rmrrrs m 011.0111. JAN murmur. nmmmxus JOHANNES Witnesses JAG. J. G. Wm, J. D.-MOK.

HABTIJN.

having foraminated for drying and steriliz-' foraminated 

